Metallic supporting-shelf and method of manufacture.



H. W. ZAWADZKY.

METALLIC SUPPORTING SHELF AND METHOD OF MANUFACTURE.

APPLICATION FILED JULY 23' 3917'- 7 possesses great strength and utility, the same 'mamawyzliwanzm;roa warnitnun oormnoiiIoUT To all whom it may concern:

Be it known that I, HERMAN W. ZAWADZKY, a. citizen of Russia, residing at Waterbury, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Metallic Supporting-Shelves and Methods of Manufacture, of which the following is a specification.

This invention relates to new and useful improvements in metallic supporting shelf and method of manufacture.

The primary object of the invention is the provision of a shelf or support adapted for such uses as the draining of articles, the shelf being formed. by stamping from a single piece blank, forming a foraminous support suitably elevated for draining purposes.

A further object of the device is to provide a drain plate that is easy and inexpensive to manufacture but at the same-time being formed from a metal blank by suitably stamping and punching the same.

A still further object of the device is to provide a perforated support that is serviceable for use with such boilers as clothes boilers and cookers and is formed of a metallic blank by the process of crimping and then stamping the same.

In the drawing forming a part of this application and in which like reference characters refer to corresponding parts throughout the several views,

Figure 1 is a plan view of a blank suitably crimped and from which the device is formed.

' Fig. 2 is an edge view thereof.

Fig. 3 is a plan view of the complete device.

Fig. 4 is a transverse sectional view taken upon line IV-IV of Fig. 1.

Fig. 5 is a transverse sectional view taken upon line VV of Fig. 3 and Fig. 6 is an edge view of a portion of the device shown in Fig. 3.

Referring more. in detail to the drawing, a sheet metal blank 10 is illustrated which may be of any desired form and size roughly approximating the size of the device to be formed. Ifirstarrange oppositely positioned radiate i ch. 5f, raid Application filed July as, i917. Serial No. 183,301.

fan-shaped crimped portions 11 in the blank, the same being pressed or struck into the body thereof. This operation provides an additional amount of material at the crimped portions 11 adapted to be stamped centrally into outwardly flaring depending flanges 12. These fianges12 will be arranged opposite each other adjacent the ends of the blank 10 and will form feet upon which the device is mounted when positioned upon any suitable support such as a table or the bottom of a wash boiler. V

A plurality, of perforations 13 are provided through the blank 10 of any desired size for permitting the drain of fluid therethrough. Downwardly struck ears 14 are provided at opposite sides of the central perforation 15'of the blank, the said ears dependin beneath the body portion ofthe device su stantially the same length as the flanges 12 and adapted for assisting in supportlng the central portion of the device as well as preventing the latter from bending or flexing adjacent the center thereof.

simple process for manufacturing a support or shelf is arranged adaptable for diflerent uses and easily formed from a sheet metal blank by successive stamping operations.

What I claim as new is 1. An article of manufacture comprising a shelf formed of a single piece of perforated metal having struck down outwardly flaring flanges oppositely arranged adjacent the ends of the device and centrally depend ing spaced ears downwardly struck from the blank of the same width as said flanges and adapted therewith for supporting the device as well as for preventing the same from bending centrally.

2. A method of making a drain shelf consisting in providing an elongated sheet metal blank, crimping outwardly flaring fan-shaped portions in the blank at opposite points adjacent the ends of the latter, then stamping the said crimped portions outwardly centrally thereof forming outwardly flaring depending flanges upon one side of the blank. V

3. A method of making a drain shelf consisting in providing an elongated sheet metal blank, crimping "outwardly flaring fan through the blank and then striking outshaped ortjons in the hlanl; a1; QQPOSitQ Wandly spaced; ears from thevcentml perfopoint m vjacze t; hsa:zmi c'ziM111:lammigfiahen ratinnupon th -swmeside 0f theblankas the 10 stamping the said crimped portiQns; 01111.- ,said flanges.

5 wardly centrall .theliQQfi'qrmingoutwardly In testimpny whelteofil afiix my signature.

flaring depending flanges upon one 'side of the blank, t hgn .1311115:hing a; plurality 0f; holes; ZAWADZKY.

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